The Samsung S90D OLED TV supports Dolby Atmos for an immersive sound experience. However, it does not come with a built-in Dolby Atmos sound system like a dedicated soundbar. For enhanced Dolby Atmos sound, pairing it with a compatible soundbar is recommended. The TV itself features a 2.1 channel speaker system with 40W output, but for a full Dolby Atmos experience, additional equipment is needed.